33 lines
720 B
Ruby
33 lines
720 B
Ruby
require_relative 'helper'
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#try to call an extern function
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class TestExtern < MiniTest::Test
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# need a code generator, for arm
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def setup
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@generator = Asm::Arm::ArmAssembler.new
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end
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def test_extern
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@generator.instance_eval {
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push lr
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ldr r0, "hello world".to_sym
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mov r7, 4 #4 is write
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swi 0
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pop pc
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mov r7, 1 #1 == exit
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swi 0
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}
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write(7 , 'label')
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end
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#helper to write the file
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def write len ,name
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writer = Asm::ObjectWriter.new(Elf::Constants::TARGET_ARM)
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assembly = @generator.assemble_to_string
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assert_equal len * 4 , assembly.length
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writer.set_text assembly
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writer.save("#{name}_test.o")
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end
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end
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